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 ###Instrução: Qual é o maior Doubles, II Classe, quando Doubles, I Classe é menor que 19?
 ###Tabelas: CREATE TABLE western_conference_finals (western_conference_finals_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Visitor VARCHAR, Score VARCHAR, Home VARCHAR, Decision VARCHAR, Attendance INT) CREATE TABLE some_differences_in_relation_to_later_editions_of_the_roman_calendar (some_differences_in_relation_to_later_editions_of_the_roman_calendar_id AUTO_INCREMENT PRIMARY KEY, Date INT, Doubles, I Class INT, Doubles, II Class INT, Greater Doubles INT, Doubles INT, Semidoubles INT, Total INT) CREATE TABLE electoral_results (electoral_results_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Candidates nominated INT, Candidates elected VARCHAR, Votes INT, % of national vote INT) CREATE TABLE list_of_health_minsters (list_of_health_minsters_id AUTO_INCREMENT PRIMARY KEY, Minister VARCHAR, Party VARCHAR, Governments VARCHAR, Term start VARCHAR, Term end VARCHAR) CREATE TABLE episodes_and_audiences (episodes_and_audiences_id AUTO_INCREMENT PRIMARY KEY, Episode VARCHAR, Title VARCHAR, Date of emission VARCHAR, Audience VARCHAR, Share VARCHAR)  
SELECT MAX Doubles, II Class FROM some_differences_in_relation_to_later_editions_of_the_roman_calendar WHERE Doubles, I Class < 19